National security and breaking a federal law that requires ALL government employees to adhere too. That's how you can lose a TS clearance or a job, etc. The 1974 Privacy Act:
The Privacy Act of 1974, 5 U.S.C. § 552a, establishes a code of fair information practices that governs the collection, maintenance, use, and dissemination of information about individuals that is maintained in systems of records by federal agencies.
-----
A potential presidential candidate willingly broke a federal law and then refuses to answer questions about it. What gets me is the media is hell bent on asking GOP candidates about the Iraq war but protect Hillary from the "tough" questions.
- - - Updated - - -
Al federal employees sign a non-disclosure form that they agree to follow the strict information & email policies. Remember a month or so ago the DOS beat around the bush looking for a "signed form". That was it if I'm not mistaken. But why get up over something like this? Because its one of her many lies and deceits added to her already long and growing list.